I knew my wheels were too small when I bought them, now that steel is setting on steel, I have a better idea of just how big they should be. I'm buying new heels. It other news, the shells look look supriseingly like my Sketch-Up Drawings. If you attempt such a project, learn Sketch - Up first. It's worth the effort. It's a free drafting box. And it makes you think of every part before you ever make it.